Clean up and remove dead code from .appveyor.yml

.appveyor.yml

@@ -7,7 +7,6 @@ clone_folder: C:\deno
 clone_depth: 1
 
 environment:
-  SCCACHE_IDLE_TIMEOUT: 0
   APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
   DENO_BUILD_MODE: release
   DENO_BUILD_PATH: $(APPVEYOR_BUILD_FOLDER)\target\release
@@ -18,13 +17,12 @@ environment:
   CARGO_HOME: $(RUST_DIR)\cargo
   RUSTUP_HOME: $(RUST_DIR)\rustup
   RUST_BACKTRACE: full
-  PYTHONPATH: third_party\python_packages
+  SCCACHE_IDLE_TIMEOUT: 0
   SCCACHE_BUCKET: deno-sccache
   AWS_ACCESS_KEY_ID: AKIAIVRN52PLDBP55LBQ
   AWS_SECRET_ACCESS_KEY:
     secure: 8ybpi/y5qE2baChsCBhNHmykng3FitELAtTYOiqZd0mw38i88dzdAX8ETNtBogMV
 
-
   # Appveyor uses 7zip to pack cache directories. We use these options:
   #   -t7z  : Use '7z' format.
   #   -snl  : Store symlinks; doesn't work, but it prevents following symlinks.
@@ -44,19 +42,6 @@ environment:
         if ($LastExitCode -ne 0) { throw "Failure. Exit code: $LastExitCode" }
       }
 
-      # Get-Tree lists all objects in a tree. It's different from Get-ChildItem
-      # in that the latter recurses through symlinks, which is problematic.
-      function Get-Tree([string[]] $Path, [switch] $Recurse, [switch] $Force) {
-        function Get-SubDirs([string[]] $Path) {
-          Get-ChildItem $Path -Force:$Force `
-                        -Attributes Directory+!ReparsePoint |
-            foreach { $_.FullName }                         |
-            foreach { $_; Get-SubDirs $_ }
-        }
-        if ($Recurse) { $Path += Get-SubDirs $Path }
-        Get-ChildItem $Path -Force:$Force @args
-      }
-
       # `Delete-Tree` is a simple wrapper around Remove-Item. It doesn't set
       # an error status if one of the paths to be deleted doesn't exist.
       function Delete-Tree([string[]] $Path) {
@@ -71,12 +56,6 @@ environment:
         }
       }
 
-      # Get-SaveCache returns $true if the cache will be saved at the end.
-      function Get-SaveCache {
-        -not $env:APPVEYOR_PULL_REQUEST_NUMBER -and
-        -not ($env:APPVEYOR_CACHE_SKIP_SAVE -eq "true")
-      }
-
 for:
   # Do no save the build cache for feature branches. TODO: Once we have multiple
   # permanent branches, use a build matrix so each branch has it's own cache.
@@ -87,7 +66,6 @@ for:
       APPVEYOR_CACHE_SKIP_SAVE: true
 
 cache:
-  # Rust stuff.
   - $(RUST_DIR)
   - $(APPVEYOR_BUILD_FOLDER)\target\release\
   - $(APPVEYOR_BUILD_FOLDER)\prebuilt\win\